The PB17D-3R is a mobile concrete placing boom built on a wheeled frame. It carries the same 17 m three-arm boom as the TRUEMAX spider model, but instead of standing on outrigger legs and being craned between positions, it sits on a rolling frame that can be towed or dragged to the next spot within the site. That single difference defines it: the PB17D-3R is repositioned without a crane, so the boom can simply follow the pour as work moves across a slab or along a structure.
This makes it the placing boom for jobs where a crane is not always free to shift the boom, or where the work advances along a line and the boom needs to travel with it. It places concrete over a 17 m radius through a fully hydraulic R-fold boom, slews a full 360° on a self-locking worm-drive turret, and is run by radio or cable remote. Standing just 2.9 m tall overall, it moves easily around and under site obstructions. Like every placing boom it is fed by a separate concrete pump, runs on a 380V/50Hz supply with a 5.5 kW motor, and is built and tested at TRUEMAX in Haining to ISO 9001:2015 and CE standards, within a line exported to over 120 countries.
1. Wheeled frame, no crane to relocate — The frame body rolls and can be towed or dragged to its next position within the site, so the boom is repositioned without tying up a crane.
2. Follows the pour — Because it moves on its own wheels, the boom is shifted freely as placing needs change, staying where the concrete has to go — useful on slabs and work that advances along a line.
3. Three-arm R-fold hydraulic boom — Three fully-hydraulic R-fold arms open to a 17 m placing radius and fold compactly for towing and transport.
4. Full 360° slewing — The boom rotates a complete circle to cover the area around each stopping point.
5. Self-locking worm-drive slewing — A turbo worm-gear drive turns smoothly and holds the boom steady at any angle, well suited to a frequently-moved boom.
6. Radio and cable remote control — Two operating modes let one operator place concrete and reposition the boom from the clearest vantage point.
7. Low 2.9 m overall height — The compact rolling profile moves easily around the site and under low obstructions between pours.
8. Quality components — Hydraulic and electrical parts from well-known international brands for stable, reliable operation, on a 380V/50Hz, 5.5 kW drive.
